Finding the Fourth Proportional to 426.68, 640.09 and 149.08
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Solution
The fourth proportional to 426.68, 640.09 and 149.08 is: 223.64
Step by Step Solution
- Step 1: Write the proportion equation
426.68 : 640.09 = 149.08 : x - Step 2: Convert to fraction form
426.68/640.09 = 149.08/x - Step 3: Cross multiply
426.68x = 640.09 × 149.08 - Step 4: Simplify right side
426.68x = 95,423.87 - Step 5: Solve for x
x = 95,423.87/426.68 - Step 6: Final answer
x = 223.64
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.